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Long-Term Debt (Summary Of Long-Term Debt) (Details) - USD ($) $ in Thousands | Jun. 30, 2016 | Dec. 31, 2015 | Aug. 14, 2013
--- | --- | --- | ---
Debt Instrument [Line Items] |  |  |
Less unamortized debt issuance costs | $ (6,046) | $ (3,526) |
Total notes payable, net | 677,695 | 489,782 |
Capitalized lease obligations, vehicles, due through 2019 | 943 | 600 |
Less current maturities | (30,372) | (222) |
Long-term debt, including capitalized lease obligations | $ 648,266 | $ 490,160 |
6% Senior Notes Due 2023 |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) | 6.00% | 6.00% |
Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) | 6.00% |  | 6.00%
Unamortized discount | $ 6,259 | $ 6,692 |
Senior Notes | 6% Senior Notes Due 2023 |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross | 493,741 | 493,308 |
Secured Debt | Term Facility | Term Loan Due 2020 |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross | $ 190,000 | $ 0 |
Effective interest rate (percent) | 3.41% |  |

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- Definition Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 + Details
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- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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